Files
container/Sources/ContainerVersion/CommandLine+Executable.swift
T
J Logan 936c916916 Actually resolve symlink when loading bundle Info.plist. (#864)
- #859 added the traversal necessary to load the app bundle but forgot
to resolve symlinks. This fix adds the resolution, making it possible to
get default system properties from an app bundle Info.plist even if the
user invokes a command from, for example, `/usr/local/bin/container`
which is a symlink to the actual install path of the bundle.
- Also fixes bugs where an incorrect executable path was supplied in
some calls.
- Breaking change: `CommandLine.executablePathUrl` extension moved from
ContainerPlugin to ContainerVersion.
2025-11-10 17:00:18 -03:00

37 lines
1.5 KiB
Swift

//===----------------------------------------------------------------------===//
// Copyright © 2025 Apple Inc. and the container project authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//===----------------------------------------------------------------------===//
import Foundation
extension CommandLine {
public static var executablePathUrl: URL {
/// _NSGetExecutablePath with a zero-length buffer returns the needed buffer length
var bufferSize: Int32 = 0
var buffer = [CChar](repeating: 0, count: Int(bufferSize))
_ = _NSGetExecutablePath(&buffer, &bufferSize)
/// Create the buffer and get the path
buffer = [CChar](repeating: 0, count: Int(bufferSize))
guard _NSGetExecutablePath(&buffer, &bufferSize) == 0 else {
fatalError("UNEXPECTED: failed to get executable path")
}
/// Return the path with the executable file component removed the last component and
let executablePath = String(cString: &buffer)
return URL(filePath: executablePath)
}
}